As I understand it these cells are manufactured under license and use the incredible performing A123 Systems cell chemistry. This chemistry is lithium-ferrous-phosphate (LFP) or LiFePO4 and is the safest of the lithium-ion chemistries we have access to. There are other names for it like lithium-iron-phosphate too.
Being the most stable of the li-ion chemistries we use does not mean they are “safe” and that you are free to do whatever you want with them!
It is harder though to force them into thermal runaway than the other chemistries we use. If they do go into runaway the reactions happen at much lower temperatures and they typically don’t catch fire.
These are 30A cells but LFP chemistry has much lower energy density than we’re used to, only 1100mAh (min)/1200mAh (typical) for these 18650’s. That’s the tradeoff for the greater safety.
They’re best used in stacked mechs in my opinion. They won’t run for very long but their discharge curve is very flat making for a very consistent vape compared to regular round cells and even when compared to pouch LiPo’s.
But before you head out to buy some there are some things to consider...
My thanks to 18650batterystore.com for sending a pair over for testing!
For more info on these cells check out the Lithium Werks web site: https://lithiumwerks.com
Being the most stable of the li-ion chemistries we use does not mean they are “safe” and that you are free to do whatever you want with them!
It is harder though to force them into thermal runaway than the other chemistries we use. If they do go into runaway the reactions happen at much lower temperatures and they typically don’t catch fire.
These are 30A cells but LFP chemistry has much lower energy density than we’re used to, only 1100mAh (min)/1200mAh (typical) for these 18650’s. That’s the tradeoff for the greater safety.
They’re best used in stacked mechs in my opinion. They won’t run for very long but their discharge curve is very flat making for a very consistent vape compared to regular round cells and even when compared to pouch LiPo’s.
But before you head out to buy some there are some things to consider...
- These are 3.3V batteries and must be charged to only 3.6V. NEVER CHARGE THEM TO 4.2V!
- The run at near 2.5V when run near their 30A rating.
- You cannot use them in a regulated device unless it has a DNA board in it and you have set it up properly for LFP/LiFePO4 cells.
- They are very low capacity for their size.
- If you need a 30A 18650 for a standard regulated mod then I recommend the Samsung 20S.
My thanks to 18650batterystore.com for sending a pair over for testing!
For more info on these cells check out the Lithium Werks web site: https://lithiumwerks.com
